CN103480762B - Automatic feeding device, automatic feeding-type punch press and automatic feeding method - Google Patents

Automatic feeding device, automatic feeding-type punch press and automatic feeding method Download PDF

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Publication number
CN103480762B
CN103480762B CN201310427250.9A CN201310427250A CN103480762B CN 103480762 B CN103480762 B CN 103480762B CN 201310427250 A CN201310427250 A CN 201310427250A CN 103480762 B CN103480762 B CN 103480762B
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China
Prior art keywords
feeding
plate
slide block
cylinder
fixed
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Expired - Fee Related
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CN201310427250.9A
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Chinese (zh)
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CN103480762A (en
Inventor
张海农
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HANGZHOU KINGNET ELECTROMECHANICAL Co Ltd
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HANGZHOU KINGNET ELECTROMECHANICAL Co Ltd
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Priority to CN201310427250.9A priority Critical patent/CN103480762B/en
Publication of CN103480762A publication Critical patent/CN103480762A/en
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Abstract

The invention relates to an automatic feeding-type punch press which comprises automatic feeding devices. The automatic feeding devices are mounted on two sides of a die of the punch press in an alignment manner respectively. Each automatic feeding device comprises a support provided with a worktop on the top face; sliding seats are arranged on screw rod transmission mechanisms mounted on the worktops; feeding sliders are mounted on the sliding seats through guide sliding rails perpendicular to the screw rod transmission mechanisms; plate fixing devices are arranged above the feeding sliders; each feeding slider slides on the corresponding guide sliding rail through two feeding cylinders respectively arranged on two sides of the feeding slider; motors of the automatic feeding devices are controlled by a control system of an electrical control cabinet to drive the screw rod transmission mechanisms to enable the sliding seats to slide, and the feeding cylinders are utilized to control the feeding sliders to slide to complete automatic feeding of plates. The automatic feeding-type punch press is adopted to punch workpieces, the automatic feeding devices are simple in structure, small in occupied space and applicable to processing of various plates, and the die of the punch press is convenient to maintain and easy for workers to operate.

Description

A kind of method of automatic feeding, self-feeding formula punch press and self-feeding
Technical field
The present invention relates to a kind of automatic feeding, especially one kind are arranged on punch press, realize the automatic of self-feeding Pay-off, belongs to punch press technical field.
Background technology
In punching press industry, in order to improve the punch press process efficiency of workpiece, it is to avoid because of the mistake of operating personnel in feeding process The security incident that mistake etc. causes occurs, and in industry, most of factories commercial city uses automatic feeding.Such as China Patent No. Patent of invention for zl200910213861.7, discloses a kind of automatic feed mechanism, and it includes frame, the work being located in frame Make table top, be arranged on screw mandrel below work top, control the servomotor that screw mandrel rotates, on screw mandrel the seat of pawling of movement, Be arranged on and pawl pawling on seat and be arranged on foundary weight plate on work top, plate be located at foundary weight plate and work top it Between, Serve Motor Control screw mandrel rotates, and drives the seat of pawling on screw mandrel to move, and by the promotion plate of pawling on seat of pawling, Realize self-feeding.Although this automatic feed mechanism is capable of self-feeding punching workpiece, can only be using this mechanism Single workpiece is punched on plate, after the completion of single workpiece punching, needs to retighten another row's workpiece on sheet metal blanking plate, Usual one piece of sheet metal blanking completes to be accomplished by shutting down to overturn plate for several times, so not only wastes a lot of times, operates Cumbersome complete it is impossible to once be punched plate.
For improve production efficiency, reduce plate and repeat feeding number of times, row those skilled in the art are made that a lot of effort.Example The utility model patent being 201120146139.9 as China Patent No., discloses a kind of self-feeding of punching strip, discharging Equipment, it is respectively provided on two sides with feed mechanism and material receiving mechanism in punching machine mold, and feed mechanism and material receiving mechanism are by machinery Arm and manipulator composition, plate, after clamping through feeding mechanical hand, moves to punching machine mold in the presence of feed mechanism successively The corresponding position in lower section, is punched successively, feeding mechanical is quick-moving touch punching machine mold when, splicing manipulator action, catch plate Material, completes the punching of remaining plate.The automatic feeder equipment of this utility model patent is although disposably can be punched plate Become, but there is also a lot of problems: 1, the size of plate is limited by feeding mechanical hand and splicing manipulator displacement. Because feeding mechanical hand is mounted in feed mechanism, splicing manipulator is mounted in splicing manipulator, feeding mechanical The distance of hand and splicing manipulator movement limits the length of plate to be processed, if plate to be processed is long, on plate just Leave the unprocessed plate region of a big section, these unprocessed plate regions, if too short, cannot be placed again It is punched in this equipment.So not only size limited length system to plate, but also a lot of materials can be wasted, practicality is not High.When the 2nd, processing some long plates if necessary, accordingly feed mechanism and material receiving mechanism are also required to lengthen, and The displacement of feeding mechanical hand and splicing manipulator also will lengthen.Because the structure of this equipment is more complicated, if in order to add If work separately fabricated equipment compared with the plate of elongated, cost is just very high.3rd, because this automatic feeder equipment is logical Cross the movement of feeding mechanical hand and splicing manipulator to realize, corresponding feed mechanism and material receiving mechanism are also just long ?.The space requirement so installing this automatic feeder equipment is also higher, for the smaller production firm of some hall space For, just inapplicable, use and install and limited by space size.4th, when repairing mould it is necessary first to by feeder Tool hand and splicing manipulator remove, away from punching machine mold, mould could be placed under repair.Which not only adds operating personnel's Labour intensity, brings a lot of inconvenience also to the repairing of mould.
Content of the invention
Purpose of design: avoid the weak point in background technology, design that a kind of structure is simple, take up an area that space is little, be applied to Various Sheet Metal Processing, mold repair are convenient, be easy to operative automatic feeding, self-feeding formula punch press and self-feeding Method.
Design: in order to realize above-mentioned purpose of design.1st, lead screw transmission mechanism is utilized to control the y direction of plate to move, Moved using the x direction that the feeding slide block in fixed frame on sliding seat controls plate, realize common shifting on x, y direction for the plate Dynamic, self-feeding.So design not only achieves the self-feeding of plate, and this device is relatively simple for structure simultaneously, both facilitates Install and keep in repair, also save great amount of cost.2nd, by two this automatic feedings, it is separately mounted to the two of punching machine mold Side, when left-hand unit is punched, the head end of plate also slowly moves in right-hand unit, when plate is in left-hand unit such plate After the completion of punching, right-hand unit is started working, and completes the punching of plate, while plate is disposably machined, also significantly Improve the working (machining) efficiency of plate.3rd, the automatic feeding being arranged on punching machine mold both sides is all to realize plate by feeding slide block Material x side moves up, and can be applied to the plate of various length, expand the scope of application of device, and screw rod transmission machine , to placement, the installing space of occupancy is also smaller for the equal y of structure.4th, two automatic feedings are all arranged on the both sides of punching machine mold, Can directly keep in repair and change punching machine mold, easy to operate.
Technical scheme: a kind of automatic feeding, it is provided with the support of work top including top surface;It is arranged on work top Lead screw transmission mechanism be provided with sliding seat;On sliding seat, feeding is provided with by the directive slide track perpendicular to lead screw transmission mechanism Slide block;It is provided with the fixing device of plate above feeding slide block;Feeding slide block passes through two feeding cylinders being respectively arranged on its both sides, Directive slide track slides.
Preferably, placed longitudinally lead screw transmission mechanism include y to screw mandrel, control motor from y to screw mandrel, be fixed on y to The fixed plate at screw mandrel two ends, the screw mandrel guide rail being located between fixed plate.
Preferably, sliding seat is provided with fixed frame;Feeding slide block passes through directive slide track located at fixing inframe.
Preferably, fixing inframe is additionally provided with the fixed support parallel with feeding slide block;Directive slide track passes through fixed support;Gu It also is provided with the fixing device of plate above fixed rack.
Preferably, fixing device includes being fixed on feeding slide block or fixed support locating rack, it is located on locating rack Multiple pressing plate cylinders perpendicular to plate;The guide groove placing plate is all had on locating rack.
Preferably, fixed frame both sides are additionally provided with the guide plate placing plate;In the moving direction of feeding slide block on fixed frame On be additionally provided with length scales.
Preferably, two groups of detent mechanisms are also included;One is mounted on the one end on fixed frame near locating rack, another is mounted on On the guide plate of feeding slide block side;Every group of detent mechanism is formed by two locating pieces and chute.
A kind of self-feeding formula punch press equipped with above-mentioned automatic feeding, including punch press;Described automatic feeding is Two, and it is arranged on the mould both sides of punch press respectively in alignment;The motor of two automatic feedings is by the control of electrical control cubicles System controls.
Preferably, the guide plate near locating rack side on two automatic feedings, sets in opposite directions;Automatic feeding On two feeding cylinders can be designed to determine journey push-down cylinder.
A kind of method of self-feeding, is applied in above-mentioned self-feeding formula punch press, comprises the following steps:
(1) plate is placed on the guide plate of the first automatic feeding, and plate head end is passed through leading of locating rack To groove;
(2) start the pressing plate cylinder on feeding slide block, plate is fixed in locating rack;
(3) start feeding cylinder, feeding cylinder promotes feeding slide block to slide on directive slide track, realizes plate in x direction On movement;
(4) while step (3), electrical control cubicles pass through the rotation of control system controlled motor, drive screw mandrel to rotate, slide Seat slides on screw mandrel guide rail, realizes plate movement in y-direction;
(5) plate, after x direction, y side are moved upwards up to relevant position, starts the pressing plate cylinder on fixed support, by plate Material is fixed in locating rack;
(6) the pressing plate cylinder on feeding slide block resets, and feeding slide block resets in the presence of feeding cylinder;
(7) control system controls punching machine mold blanking;
(8), after the completion of workpiece punching, control system controls punching machine mold to reset;
(9) start the pressing plate air cylinder fixed plate material on feeding slide block, the pressing plate cylinder on fixed support resets simultaneously;
(10) repeat step (3)~(9), until sheet metal blanking completes;
(11) now the head end of plate passes through the guide groove of the second automatic feeding;
(12) start the pressing plate cylinder of the second automatic feeding, plate is fixed in locating rack;
(13) repeat step (3)~(10), until whole sheet metal blanking completes.
Compared with background technology, one is to control plate respectively by lead screw transmission mechanism and feeding slide block to patent of the present invention X, y direction, realizes self-feeding, simplifies the structure of device, reduces the manufacturing cost of device;Two is two self-feeding dresses Put the both sides being separately mounted to punching machine mold, and screw mandrel be in y to placement, saved the space of factory building, substantially reduced device Take up room, for factory building, smaller manufacturing enterprise also can be suitable for, beneficial to popularization;Three be plate x direction movement all lean on Come to realize, feeding slide block is once punched position by mobile for plate, resets upon, so efficiently solves dress for the movement of feeding slide block Put the restriction to plate size, length, the plate for various length can be suitable for, and expands the scope of application of device;Four are When maintenance and replacing punching machine mold, can directly operate, reduce the labour intensity of operating personnel, more convenient to operate;Five are The automatic feeding of both sides is alternately accomplished the punching of whole plate, can complete disposable for plate punching, substantially increase The punching efficiency of plate, has saved plenty of time cost and human cost, in addition, the holding position on plate also can rush follow-up Blanking in sanction, improves the utilization rate of plate, has saved lot of materials cost;Six guide plates being in fixed frame both sides And detent mechanism, plate is supported and guide-localization, plate has more been precisely located, improve the punching quality of plate; Seven is to carry out feeding in punch press side, facilitates the operation of staff, and a staff can control multiple stage punch press and rushed Cut out, substantially increase production efficiency, reduce human cost.
Brief description
Below in conjunction with the accompanying drawings technical solution of the present invention is described further:
Accompanying drawing 1 is the stereogram of automatic feeding;
Accompanying drawing 2 is the front view of automatic feeding;
Accompanying drawing 3 is the top view of automatic feeding;
Accompanying drawing 4 is the enlarged drawing at p in accompanying drawing 1;
Accompanying drawing 5 is the perspective view of self-feeding formula lathe;
Accompanying drawing 6 is the structural representation of plate to be processed;
Wherein: 1, support;2nd, work top;3rd, sliding seat;4th, lead screw transmission mechanism;5th, feeding slide block;6th, directive slide track; 7th, fixed plate;8th, y is to screw mandrel;9th, screw mandrel guide rail;10th, pressing plate cylinder;11st, feeding cylinder a;12nd, guide plate a;13rd, guide plate b; 14th, adjusting screw rod;15th, locating rack;16th, detent mechanism b;17th, fixed frame;18th, feeding cylinder b;19th, detent mechanism a;20th, fixed Position block b;21st, chute b;22nd, mould;23rd, punch press;24th, guide groove;25th, fixed support;26th, locating piece a;27th, chute a; 28th, length scales.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Embodiment 1: 1-4 referring to the drawings.A kind of automatic feeding, including support 1;The top surface of support 1 is provided with work Table top 2;Y is provided with work top 2 to the lead screw transmission mechanism 4 placed;Lead screw transmission mechanism 4 include y to screw mandrel 8, control y To screw mandrel 8 motor (not shown), be fixed on fixed plate 7 from y to screw mandrel 8 two ends, be located at fixed plate 7 between screw mandrel lead Rail 9;Sliding seat 3 is additionally provided with lead screw transmission mechanism 4;Sliding seat 3, slides on screw mandrel guide rail 9 to the rotation of screw mandrel 8 with y;Sliding Dynamic seat 3 is provided with fixed frame 17;It is provided with directive slide track 6 and fixed support 25 in fixed frame 17;Directive slide track 6 and screw mandrel guide rail 9 Vertically;Directive slide track 6 passes through fixed support 25, and the two ends of directive slide track are fixed in fixed frame 17;Fixed support 25 is fixing One end in fixed frame 17;Be additionally provided with fixed frame 17 can on directive slide track 6 movement feeding slide block 5;Feeding slide block 5 He The top of fixed support 25 is equipped with locating rack 15;The middle part of locating rack 15 has the guide groove 24 parallel to directive slide track 6; Plate is placed in guide groove 24;Multiple pressing plate cylinders 10 are equipped with locating rack 15, and the push rod of pressing plate cylinder 10 passes through The plate in guide groove 24 is lived in locating rack 15 solid pressure;The two ends of fixed frame 17 are additionally provided with feeding cylinder a11 and feeding cylinder b18;Feeding cylinder a11 is located at the side near fixed support 25, and the push rod of feeding cylinder a11 passes through fixed frame 17, fixes Support 25, is connected in the middle part of feeding slide block 5;Feeding cylinder b18 is located at the side near feeding slide block 5, and feeding cylinder The push rod of b18 passes through fixed frame 17, is connected with the middle part of feeding slide block 5;The top of feeding cylinder b18 is located on fixed frame 17 It is fixed with guide plate b13;Guide plate a12 is located at the side on fixed frame 17 by feeding cylinder a11;Guide plate a12 is z shape, and The base plate of guide plate a12 is connected with the base plate of fixed frame 17;Feeding cylinder a11 passes through the intermediate plate of guide plate a12;Guide plate The top board of a12 extends to the direction away from fixed frame 17;It is additionally provided with regulation spiral shell between the intermediate plate of guide plate a12 and fixed frame 17 Bar 14;Described adjusting screw rod 14 is two, and parallel both sides positioned at feeding cylinder a11 respectively, the size according to plate come turn Dynamic adjusting screw rod 14, thus adjusting the distance between guide plate a12 and fixed frame 17, preferably places and processing plate;Fixing On frame 17, length scales 28 are additionally provided with the moving direction of feeding slide block 5, plate can be clear that by length scales 28 The displacement of material, is conveniently punched being normally carried out of work;On fixed frame 17 on the top surface of fixed support 25, also have flat Row in chute a27 from y to screw mandrel 8;Chute a27 is provided with two locating piece a26 that can slide on chute a27;According to plate Width, adjust the distance between two locating piece a26, plate positioned,;Have two on guide plate b13 all to put down with chute a The chute b21 of row;The locating piece b20 that can slide on chute b21 is equipped with chute b21;By two locating piece b20, fixed Position plate, prevents from shifting in plate moving process, improves the crudy of workpiece;Y turning to screw mandrel 8 is driven by motor Dynamic, and then by the movement of sliding seat 3, to control plate movement in y-direction;Using feeding cylinder a11 and feeding cylinder The release of b18 and reset, to control plate movement in the x direction, to realize self-feeding.
Embodiment 2: on the basis of embodiment 1, referring to the drawings 5.A kind of self-feeding formula punch press, including punch press 23 and position Mould 22 on punch press 23;Automatic feeding described in embodiment 1 is two, and is arranged on punch press 23 respectively in alignment Mould 22 both sides;The motor of two automatic feedings is controlled by the control system of electrical control cubicles;Two automatic feedings Guide plate b13 all opposite and be located at the both sides of mould 22.
In above-mentioned self-feeding formula punch press, the feeding cylinder a11 on automatic feeding and feeding cylinder b18 can design Cheng Dingcheng push-down cylinder, so more precisely controls the position that plate is punched every time, improves the punching precision of workpiece, improves Crudy.
Embodiment 3: on the basis of embodiment 2, referring to the drawings 6.Using the punch press in embodiment 2, the side of self-feeding Method, taking process workpiece shown in accompanying drawing 6 as a example, comprises the following steps.
(1) calculate the displacement of plate.
1. before processing, the first size according to plate, designs arrangement on plate for the workpiece, to be punched at most on one piece of plate For the purpose of quantity workpiece, save plate, cost-effective;
2. the arrangement on plate according to workpiece, meter calculate punching unit one when, plate moving coordinate (x, Y);
3. according to step 1. arrangement on plate for the middle workpiece, meter calculate adjacent workpieces on x direction apart from l, y side Upwards adjacent workpieces apart from s and dislocation distance k;Using y to packet punching mode blanking, in the x-direction by y direction Each group workpiece be punched out plate, " 1,2,3 ... " order dislocation punching such as representing in accompanying drawing;
4. set calculate in the control system that shift value inputs switch board.
(2) plate is placed on the guide plate a12 of left side automatic feeding, and plate head end is passed through locating rack 15 Guide groove 24;
(3) start the pressing plate cylinder 10 on feeding slide block 5, plate is fixed in locating rack 15;
(4) start feeding cylinder a11, feeding cylinder a11 promotes feeding slide block 5 to slide on directive slide track 6, realizes plate Movement in the x direction, meanwhile, electrical control cubicles pass through the rotation of control system controlled motor, drive y to rotate to screw mandrel 8, sliding seat 3 slide on screw mandrel guide rail 9, realize plate movement in y-direction;
(5) plate, after x direction, y side are moved upwards up to first punching position (x, y), starts on fixed support 25 Pressing plate cylinder 10, plate is fixed in locating rack 15;
(6) the pressing plate cylinder 10 on feeding slide block 5 resets, and feeding slide block 5 resets in the presence of feeding cylinder b18;
(7) control system controls mould 22 blanking of punch press 23;
(8), after the completion of workpiece punching, control system controls the mould 22 of punch press 23 to reset;
(9) the pressing plate cylinder 10 starting on feeding slide block 5 fixes plate, and the pressing plate cylinder 10 on fixed support 25 is multiple simultaneously Position;
(10) repeat step (4)~(9), successively movable plate expect (x, y+2s), (x+k, y+3s) (x+k, y+s), (x+l, Y), (x+l, y+2s), (x+l+k, y+3s), (x+l+k, y+s) ... are until plate has been punched in the automatic feeding of left side Become;
(11) now the head end of plate passes through the guide groove 24 of right side automatic feeding;
(12) start the pressing plate cylinder 10 of right side automatic feeding, plate is fixed in locating rack 15;
(13) repeat step (4)~(9), until whole sheet metal blanking completes.
It is to be understood that: although above-described embodiment is contrasted to the mentality of designing of the present invention, detailed word is retouched State, but these word descriptions, simply the simple text of mentality of designing of the present invention is described, rather than to mentality of designing of the present invention Restriction, any combination, increase or modification without departing from mentality of designing of the present invention, each fall within protection scope of the present invention.

Claims (6)

1. a kind of automatic feeding, including top surface be provided with work top support it is characterised in that: be arranged on work top Lead screw transmission mechanism be provided with sliding seat;On sliding seat, feeding is provided with by the directive slide track perpendicular to lead screw transmission mechanism Slide block;It is provided with the fixing device of plate above feeding slide block;Feeding slide block passes through two feeding cylinders being respectively arranged on its both sides, Directive slide track slides;Placed longitudinally lead screw transmission mechanism include y to screw mandrel, control motor from y to screw mandrel, be fixed on y Fixed plate, the screw mandrel guide rail being located between fixed plate to screw mandrel two ends;Sliding seat is provided with fixed frame;Feeding slide block passes through to lead To slide rail located at fixing inframe;Fixed frame both sides are additionally provided with the guide plate placing plate;In the movement of feeding slide block on fixed frame Length scales are additionally provided with direction;The two ends of fixed frame are additionally provided with feeding cylinder a and feeding cylinder b;Fixing inframe be additionally provided with The parallel fixed support of feeding slide block;Feeding cylinder a is located near support bracket fastened side, and the push rod of feeding cylinder a passes through Fixed frame, fixed support, are connected with the middle part of feeding slide block;Feeding cylinder b is located at the side near feeding slide block, and feeding The push rod of cylinder b passes through fixed frame, is connected with the middle part of feeding slide block.
2. automatic feeding according to claim 1 it is characterised in that: directive slide track pass through fixed support;Fixing It also is provided with the fixing device of plate above frame;Fixing device includes locating rack, the position being fixed on feeding slide block and fixed support Multiple pressing plate cylinders perpendicular to plate on locating rack;The guide groove placing plate is all had on locating rack.
3. automatic feeding according to claim 2 it is characterised in that: also include two groups of detent mechanisms;One is mounted on Near one end of locating rack on fixed frame, on another guide plate being mounted near feeding slide block side;Every group of detent mechanism is equal It is made up of two locating pieces and chute.
4. a kind of self-feeding formula punch press equipped with the automatic feeding described in claim 3, including punch press, its feature exists In: automatic feeding is two, and is arranged on the mould both sides of punch press respectively in alignment;The motor of two automatic feedings Control system by electrical control cubicles controls.
5. self-feeding formula punch press according to claim 4 it is characterised in that: on two automatic feedings near positioning The guide plate of frame side, sets in opposite directions.
6. a kind of method of self-feeding, is applied in the self-feeding formula punch press described in claim 5 it is characterised in that including Following steps:
(1) plate is placed on the guide plate of the first automatic feeding, and the guiding that plate head end is passed through locating rack is led to Groove;
(2) start the pressing plate cylinder on feeding slide block, plate is fixed in locating rack;
(3) start feeding cylinder, feeding cylinder promotes feeding slide block to slide on directive slide track, realizes plate in the x direction Mobile;
(4) while step (3), electrical control cubicles pass through the rotation of control system controlled motor, drive screw mandrel to rotate, sliding seat exists Slide on screw mandrel guide rail, realize plate movement in y-direction;
(5) plate, after x direction, y side are moved upwards up to relevant position, starts the pressing plate cylinder on fixed support, and plate is solid It is scheduled in locating rack;
(6) the pressing plate cylinder on feeding slide block resets, and feeding slide block resets in the presence of feeding cylinder;
(7) control system controls punching machine mold punching plate;
(8), after the completion of workpiece punching, control system controls punching machine mold to reset;
(9) start the pressing plate air cylinder fixed plate material on feeding slide block, the pressing plate cylinder on fixed support resets simultaneously;
(10) repeat step (3)~(9), until sheet metal blanking completes;
(11) now the head end of plate passes through the guide groove of the second automatic feeding;
(12) start the pressing plate cylinder of the second automatic feeding, plate is fixed in locating rack;
(13) repeat step (3)~(10), until whole sheet metal blanking completes.
CN201310427250.9A 2013-09-18 2013-09-18 Automatic feeding device, automatic feeding-type punch press and automatic feeding method Expired - Fee Related CN103480762B (en)

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CN106964746A (en) * 2016-10-20 2017-07-21 庄召国 A kind of feed mechanism of riveting machine
CN106964743B (en) * 2016-10-20 2020-01-07 庄召国 Automatic riveting machine
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CN112363459A (en) * 2020-11-24 2021-02-12 广东科学技术职业学院 Control method and system for realizing infinite length feeding

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CN102091745A (en) * 2009-12-10 2011-06-15 江苏三星机械制造有限公司 Feeding mechanism for punch press
CN202212486U (en) * 2011-07-16 2012-05-09 浦俊华 Numerical control workbench for precision hydraulic combined punching and shearing machine
CN202185530U (en) * 2011-07-29 2012-04-11 台州市通益机械设备有限公司 Automatic numerical control material punching equipment
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CN203496320U (en) * 2013-09-18 2014-03-26 杭州金浪机电有限公司 Automatic feeding device and automatic-feeding punching machine

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